<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
        <title>Document</title>
    <style>
        * {
            margin: 0;
            padding: 0;
        }
        div{
            height: 300px;
            width: 300px;
            border: 1px solid red;
        }
    </style>
</head>
    <body>
        <div>
            用户名：
            <input type="text" name="username" id="username" placeholder="请输入用户名" />
        <label>
            <br>
            性别：
            <input type="radio" name="gender" value="1" />
            男
        </label>
        <label>
            <input type="radio" name="gender" value="0" checked="charset" />
            女
        </label>
        <br>
        
        <label class="hobby">爱好：
            <input type="checkbox" name="hobby" value="1" />吃
            <input type="checkbox" name="hobby" value="1" />喝
            <input type="checkbox" name="hobby" value="1" />玩
            <input type="checkbox" name="hobby" value="1" />睡
        </label>
       <video width=300px, height=300px src="img\视频.mp4" controls="controls" autoplay="autoplay" loop="loop" muted="muted"></video>
    </div>
    </body>
</html>